Carpenters Firemen Coal miners (they still exist) Doctors Nurses Respiratory therapists Nursing assistants Hobby woodworkers Body shop / mechanics Masons Painters Farmers Homeowners working on pre 1970 houses Contractors in general Paramedics Boatwrights EMTs Exterminators

All of these people risk injury, chronic illness, and death without proper gear and regulation. I’m sure I missed some people, this is just off the top of my head.